I encounter a polyspace violation of MISRA C:2012 1.1 Too many macro definitions have. How to know which macros it is referring to ?

MISRA C:2012 1.1 (Required)

The program shall contain no violations of the standard C syntax and constraints, and shall not exceed the implementation's translation limits.

Too many macro definitions have been found in this translation unit: 5034. The limit is 4095.

I encounter this violation with Polyspace bug finder. This violation is shown in CPUComm.c and Main.c . However, when i count the number of macros it is definitely a lot lower than 5034. Is there any other .h or .c it is referring to for the macros ? How do we know which files we need to search and how do we solve it ?

The main.c has a lot of header files. Do we need to also consider those to search for macros ?

Answer 1

[Shivang]

Hi Rohit,

I understand that Polyspace indicates a Standards violation regarding the number of macro definitions in two of your .C files.

Note that Polyspace counts not only macros defined in the .C file itself but also all macros defined in the header files. You've included several header files in your .C files. This is the reason the macro definition count in your .C files exceeds the limit specified in the Standard.

You can refer to the MISRA C:2012 1.1 documentation for more details: https://in.mathworks.com/help/bugfinder/ref/misrac2012rule1.1.html

[Rohit]

Thank You Shivang,

I have cleared the violations using ifndef in every header files.

plcFunction.h ------

#ifndef PLCFUNCTION_H_

define PLCFUNCTION_H_

...............

#endif